If your truck didn't come with power folding mirrors from the factory the power fold function isn't going to work even if you swap the mirrors just to let you know.

From what l understand according and according to some other forums it will work. You have to purchase the door modules for a truck that has power folding mirrors and the window switch. There are a few people that have done it successfully.

I found the following info while searching the web,

1. You need the mirrors for your year of truck.
2. You need the door modules.
3. You need the switch.

Once you get that stuff, you can setup with your dealer to flash the BCM. The Service Manager will call his tech advisor to have the new vehicle configuration updated so they can flash the BCM with the Scan Tool. The dealer will ask you for the part numbers of the items you installed which he gives to the tech advisor. They need this for some reason.